WO2023245683A1 - Procédé et appareil d'indication de type de vecteur de base - Google Patents

Procédé et appareil d'indication de type de vecteur de base Download PDF

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Publication number
WO2023245683A1
WO2023245683A1 PCT/CN2022/101331 CN2022101331W WO2023245683A1 WO 2023245683 A1 WO2023245683 A1 WO 2023245683A1 CN 2022101331 W CN2022101331 W CN 2022101331W WO 2023245683 A1 WO2023245683 A1 WO 2023245683A1
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WIPO (PCT)
Prior art keywords
basis vector
basis
terminal device
type
vector
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PCT/CN2022/101331
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English (en)
Chinese (zh)
Inventor
高雪媛
李俊丽
Original Assignee
北京小米移动软件有限公司
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Filing date
Publication date
Application filed by 北京小米移动软件有限公司 filed Critical 北京小米移动软件有限公司
Priority to PCT/CN2022/101331 priority Critical patent/WO2023245683A1/fr
Priority to CN202280002091.5A priority patent/CN118575424A/zh
Publication of WO2023245683A1 publication Critical patent/WO2023245683A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/0413—MIMO systems
    • H04B7/0417—Feedback systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/0413—MIMO systems
    • H04B7/0456—Selection of precoding matrices or codebooks, e.g. using matrices antenna weighting

Definitions

  • the present disclosure relates to the field of communication technology, and in particular, to a basis vector type indication method and device.
  • Type II codebook For medium and high-speed mobile terminal equipment, due to the rapid changes of the channel in the time domain, if the version 16/17 (Rel-16/17) Type II (Type II) codebook is used as the precoding of the terminal equipment within a certain time range, Due to channel changes and precoding may not match, system performance will be degraded.
  • the codebook is enhanced by introducing TD (Time Domain, time domain) basis vectors/DD (Doppler Domain, Doppler domain) basis vectors on the basis of the Rel-16/17 Type II codebook.
  • the network side device and/or the terminal device may use the enhanced codebook to perform precoding calculation or predictive precoding.
  • TD basis vectors/DD basis vectors include multiple types. When performing precoding calculations or predictive precoding, it is necessary to determine the type of TD basis vectors/DD basis vectors. Therefore, a TD basis vector/DD basis is urgently needed. Indicates the type of vector.
  • Embodiments of the present disclosure provide a base vector type indication method and device to indicate the type of TD base vector/DD base vector, which can reduce the configuration overhead of network side equipment or the feedback overhead of terminal equipment, and can realize various Type II Flexible switching between codebooks.
  • embodiments of the present disclosure provide a base vector type indication method, which is executed by a terminal device.
  • the method includes: receiving a first type indication sent by a network side device; and determining when Type of domain TD basis vectors and/or Doppler domain DD basis vectors to calculate precoding or predictive precoding.
  • the terminal device receives the first type indication sent by the network side device, and determines the type of the time domain TD basis vector and/or the Doppler domain DD basis vector according to the first type indication to calculate precoding or prediction. precoded.
  • the configuration overhead of network-side devices or the feedback overhead of terminal devices can be reduced, and flexible switching between various Type II codebooks can be achieved.
  • embodiments of the present disclosure provide another basis vector type indication method, which method is executed by a terminal device.
  • the method includes: sending a second type indication for calculating precoding or predictive precoding to a network side device, Wherein, the second type indication is used to indicate the type of the time domain TD basis vector and/or the Doppler domain DD basis vector.
  • embodiments of the present disclosure provide yet another base vector type indication method, which method is executed by a network side device.
  • the method includes: receiving a second type indication sent by a terminal device; and determining, according to the second type indication, Type of TD basis vectors and/or DD basis vectors to calculate precoding or predictive precoding.
  • embodiments of the present disclosure provide yet another basis vector type indication method, which method is executed by a network side device.
  • the method includes: sending a first type indication for calculating precoding or predictive precoding to a terminal device, Wherein, the first type indication is used to indicate the type of TD basis vector and/or DD basis vector.
  • embodiments of the present disclosure provide a communication device that has some or all of the functions of a terminal device for implementing the method described in the first aspect.
  • the functions of the communication device may have some or all of the functions of the present disclosure.
  • the functions in the embodiments may also be used to independently implement any of the embodiments of the present disclosure.
  • the functions described can be implemented by hardware, or can be implemented by hardware executing corresponding software.
  • the hardware or software includes one or more units or modules corresponding to the above functions.
  • the communication device includes: a transceiver module configured to receive a first type indication sent by a network side device; a processing module configured to determine a time domain TD base vector according to the first type indication and/or the type of Doppler domain DD basis vectors to calculate precoding or predictive precoding.
  • embodiments of the present disclosure provide another communication device that has part or all of the functions of the terminal device in implementing the method described in the second aspect.
  • the functions of the communication device may have part or all of the functions in the present disclosure.
  • the functions in all the embodiments may also be used to independently implement any one embodiment of the present disclosure.
  • the functions described can be implemented by hardware, or can be implemented by hardware executing corresponding software.
  • the hardware or software includes one or more units or modules corresponding to the above functions.
  • the communication device includes: a transceiver module configured to send a second type of indication for calculating precoding or predictive precoding to the network side device, wherein the second type of indication is used to indicate The type of TD basis vectors and/or DD basis vectors.
  • embodiments of the present disclosure provide yet another communication device, which has some or all of the functions of the network side device in implementing the method example described in the third aspect.
  • the functions of the communication device may include the functions of the communication device in the present disclosure.
  • the functions in some or all of the embodiments may also be used to independently implement any one of the embodiments of the present disclosure.
  • the functions described can be implemented by hardware, or can be implemented by hardware executing corresponding software.
  • the hardware or software includes one or more units or modules corresponding to the above functions.
  • the communication device includes: a transceiver module configured to receive a second type of indication sent by a terminal device; a processing module configured to determine a TD basis vector and/or based on the second type of indication. Type of DD basis vectors to calculate precoding or predictive precoding.
  • embodiments of the present disclosure provide yet another communication device that has some or all of the functions of the network side device in implementing the method example described in the fourth aspect.
  • the functions of the communication device may include the functions of the communication device in the present disclosure.
  • the functions in some or all of the embodiments may also be used to independently implement any one of the embodiments of the present disclosure.
  • the functions described can be implemented by hardware, or can be implemented by hardware executing corresponding software.
  • the hardware or software includes one or more units or modules corresponding to the above functions.
  • the communication device includes: a transceiver module configured to send a first type indication for calculating precoding or predictive precoding to the terminal device, wherein the first type indication is used to indicate TD The type of basis vectors and/or DD basis vectors.
  • an embodiment of the present disclosure provides a communication device.
  • the communication device includes a processor.
  • the processor calls a computer program in a memory, it executes the method described in the first aspect or the second aspect.
  • an embodiment of the present disclosure provides a communication device.
  • the communication device includes a processor.
  • the processor calls a computer program in a memory, it executes the method described in the third or fourth aspect.
  • an embodiment of the present disclosure provides a communication device.
  • the communication device includes a processor and a memory, and a computer program is stored in the memory; the processor executes the computer program stored in the memory, so that the communication device The method described in the first aspect or the second aspect is executed.
  • an embodiment of the present disclosure provides a communication device.
  • the communication device includes a processor and a memory, and a computer program is stored in the memory; the processor executes the computer program stored in the memory, so that the communication device Execute the method described in the third or fourth aspect above.
  • an embodiment of the present disclosure provides a communication device.
  • the device includes a processor and an interface circuit.
  • the interface circuit is used to receive code instructions and transmit them to the processor.
  • the processor is used to run the code instructions to cause The device performs the method described in the above first or second aspect.
  • an embodiment of the present disclosure provides a communication device.
  • the device includes a processor and an interface circuit.
  • the interface circuit is used to receive code instructions and transmit them to the processor.
  • the processor is used to run the code instructions to cause The device performs the method described in the above third or fourth aspect.
  • embodiments of the present disclosure provide a communication system, which includes the communication device described in the fifth aspect and the communication device described in the eighth aspect, or the system includes the communication device described in the sixth aspect and The communication device according to the seventh aspect, or the system includes the communication device according to the ninth aspect and the communication device according to the tenth aspect, or the system includes the communication device according to the eleventh aspect and the twelfth aspect
  • the communication device described in the aspect, or the system includes the communication device described in the thirteenth aspect and the communication device described in the fourteenth aspect.
  • embodiments of the present invention provide a computer-readable storage medium for storing instructions used by the terminal device. When the instructions are executed, the terminal device is caused to execute the first aspect or the second aspect. methods described in this regard.
  • embodiments of the present invention provide a readable storage medium for storing instructions used by the above-mentioned network-side device.
  • the network-side device is caused to execute the above-mentioned third aspect or the third aspect. methods described in the four aspects.
  • the present disclosure also provides a computer program product including a computer program, which, when run on a computer, causes the computer to execute the method described in the first or second aspect.
  • the present disclosure also provides a computer program product including a computer program, which when run on a computer causes the computer to execute the method described in the third or fourth aspect.
  • the present disclosure provides a chip system, which includes at least one processor and an interface for supporting a terminal device to implement the functions involved in the first aspect or the second aspect, for example, determining or processing the above method. At least one of the data and information involved.
  • the chip system further includes a memory, and the memory is used to store necessary computer programs and data for the network side device.
  • the chip system may be composed of chips, or may include chips and other discrete devices.
  • the present disclosure provides a chip system.
  • the chip system includes at least one processor and an interface for supporting a network side device to implement the functions involved in the third or fourth aspect, for example, determining or processing the above-mentioned At least one of the data and information involved in the method.
  • the chip system further includes a memory, and the memory is used to store necessary computer programs and data for the terminal device.
  • the chip system may be composed of chips, or may include chips and other discrete devices.
  • the present disclosure provides a computer program that, when run on a computer, causes the computer to execute the method described in the above first or second aspect.
  • the present disclosure provides a computer program that, when run on a computer, causes the computer to execute the method described in the third or fourth aspect.
  • Figure 1 is an architectural diagram of a communication system provided by an embodiment of the present disclosure
  • Figure 2 is a flow chart of a method for indicating a basis vector type provided by an embodiment of the present disclosure
  • Figure 3 is a flow chart of another basis vector type indication method provided by an embodiment of the present disclosure.
  • Figure 4 is a flow chart of yet another basis vector type indication method provided by an embodiment of the present disclosure.
  • Figure 5 is a flow chart of yet another basis vector type indication method provided by an embodiment of the present disclosure.
  • Figure 6 is a structural diagram of a communication device provided by an embodiment of the present disclosure.
  • Figure 7 is a structural diagram of another communication device provided by an embodiment of the present disclosure.
  • FIG. 8 is a schematic structural diagram of a chip provided by an embodiment of the present disclosure.
  • SD (Spatial Domain, air domain) basis vector
  • the airspace may include a transmitting side airspace and a receiving side airspace
  • the airspace base vector may be determined based on the transmitting side airspace base vector and the receiving side airspace base vector.
  • Each transmitting side air domain basis vector may correspond to a transmitting beam (beam) of the transmitting end device.
  • Each receiving side air domain basis vector may correspond to a receiving beam (beam) of the receiving end device.
  • the following uses the transmitting side air domain basis vector as an example for explanation.
  • the receiving side air domain basis vector is similar to the transmitting side air domain basis vector.
  • the transmitting side air domain basis vector is usually associated with the transmitting side antenna array.
  • many parameters involved in the expression of the transmitting side air domain basis vector can be understood as different attributes used to characterize the transmitting side antenna array. Therefore, in order to facilitate understanding of the transmitting side air domain basis vectors involved in the embodiments of the present disclosure, the transmitting side air domain basis vectors will be described below in conjunction with the transmitting side antenna array. Nonetheless, those skilled in the art should understand that the transmitting side air domain basis vectors involved in the embodiments of the present disclosure are not limited to a specific antenna array. During the specific implementation process, a suitable antenna array can be selected according to specific needs, and based on the selected antenna array, various parameters involved in the transmitting side air domain basis vector involved in the embodiment of the present disclosure can be set.
  • Frequency domain basis vectors are used to characterize the variation pattern of the channel in the frequency domain.
  • the frequency domain basis vectors can specifically be used to represent the changing rules of the weighting coefficients of each spatial domain basis vector in each frequency domain unit.
  • the change pattern represented by the frequency domain basis vector is related to factors such as multipath delay. It can be understood that when a signal is transmitted through a wireless channel, the signal may have different transmission delays on different transmission paths.
  • the changing rules of the channel in the frequency domain caused by different transmission delays can be characterized by different frequency domain basis vectors.
  • the dimension of the frequency domain basis vector is Nf, that is, a frequency domain basis vector contains Nf elements.
  • the dimension of the frequency domain basis vector may be equal to the number of frequency domain units that require CSI measurement. Since the number of frequency domain units required for CSI measurement may be different at different times, the dimensions of the frequency domain basis vectors may also be different. In other words, the dimensions of the frequency domain basis vectors are variable.
  • the dimension of the frequency domain basis vector may also be equal to the number of frequency domain units included in the available bandwidth of the terminal.
  • the available bandwidth of the terminal may be configured by the network device.
  • the available bandwidth of the terminal is part or all of the system bandwidth.
  • the available bandwidth of the terminal can also be called bandwidth part (BWP), which is not limited in the embodiments of the present disclosure.
  • the length of the frequency domain basis vector can also be equal to the length of the signaling used to indicate the location and number of frequency domain units to be reported.
  • the length of the frequency domain basis vector can be equal to the number of signaling bits, etc. .
  • signaling used to indicate the location and number of frequency domain units to be reported may be signaling used for reporting bandwidth (reporting band).
  • the signaling may, for example, be in the form of a bitmap to indicate the location and number of frequency domain units to be reported. Therefore, the dimension of the frequency domain basis vector can be the number of bits of the bitmap.
  • the time domain basis vector is used to characterize the change pattern of the channel in the time domain. That is, the time domain basis vectors are used to characterize the time variability of the channel.
  • the time variability of the channel means that the transfer function of the channel changes with time.
  • the time variability of the channel is related to factors such as Doppler shift.
  • the dimension of the time domain basis vector is Nt, that is, one time domain basis vector contains Nt elements.
  • the dimension of the time domain basis vector may be equal to the number of time units that require CSI measurement. It can be understood that since the number of time units required for CSI measurement may be different in different scenarios, the dimensions of the time domain basis vectors may also be different. In other words, the dimensions of the time domain basis vectors are variable.
  • FIG. 1 is a schematic architectural diagram of a communication system provided by an embodiment of the present disclosure.
  • the communication system may include but is not limited to one network side device and one terminal device.
  • the number and form of devices shown in Figure 1 are only for examples and do not constitute a limitation on the embodiments of the present disclosure. In actual applications, two or more devices may be included.
  • the communication system shown in Figure 1 includes a network side device 101 and a terminal device 102 as an example.
  • LTE long term evolution
  • 5th generation fifth generation
  • 5G new radio (NR) system 5th generation new radio
  • the network side device 101 in the embodiment of the present disclosure is an entity on the network side that is used to transmit or receive signals.
  • the network side device 101 can be an evolved base station (evolved NodeB, eNB), a transmission point (transmission reception point, TRP), a next generation base station (next generation NodeB, gNB) in an NR system, or other future mobile communication systems.
  • eNB evolved base station
  • TRP transmission reception point
  • gNB next generation base station
  • WiFi wireless fidelity
  • the embodiments of the present disclosure do not limit the specific technology and specific equipment form used by the network side equipment.
  • the network-side device may be composed of a centralized unit (central unit, CU) and a distributed unit (DU), where the CU may also be called a control unit (control unit), using CU-
  • the structure of DU can separate network-side equipment, such as the protocol layer of network-side equipment. Some protocol layer functions are centralized controlled by the CU, and the remaining part or all protocol layer functions are distributed in the DU, and the CU centrally controls the DU. .
  • the terminal device 102 in the embodiment of the present disclosure is an entity on the user side that is used to receive or transmit signals, such as a mobile phone.
  • Terminal equipment can also be called terminal equipment (terminal), user equipment (user equipment, UE), mobile station (mobile station, MS), mobile terminal equipment (mobile terminal, MT), etc.
  • the terminal device can be a car with communication functions, a smart car, a mobile phone, a wearable device, a tablet computer (Pad), a computer with wireless transceiver functions, a virtual reality (VR) terminal device, an augmented reality (augmented reality (AR) terminal equipment, wireless terminal equipment in industrial control, wireless terminal equipment in self-driving, wireless terminal equipment in remote medical surgery, smart grid ( Wireless terminal equipment in smart grid, wireless terminal equipment in transportation safety, wireless terminal equipment in smart city, wireless terminal equipment in smart home, etc.
  • the embodiments of the present disclosure do not limit the specific technology and specific equipment form used by the terminal equipment.
  • LTE long term evolution
  • 5th generation 5th generation
  • NR 5th generation new radio
  • side link in the embodiment of the present disclosure may also be called a side link or a through link.
  • Enhanced codebook structures may include the following three types:
  • Codebook structure 3 W 1 and W f remain unchanged, and multiple W 2 are reported;
  • W d and W t correspond to the DD basis vector and TD basis vector respectively.
  • the type corresponding to W t or W d includes the following four options:
  • Alt1 Orthogonal DFT (Discrete Fourier Transform, Discrete Fourier Transform) basis vector (including or not including rotation factors);
  • Alt3 Other waveforms, such as DCT (Discrete Cosine Transform, Discrete Cosine Transform) or Slepian;
  • Alt1 ⁇ Alt3 means that the TD basis vector/DD basis vector uses different waveforms to compress the combined coefficients in the time domain
  • Alt4 means that the time domain coefficients are not compressed, that is, the terminal device reports multiple airspaces corresponding to different times.
  • the Rel-18 enhanced codebook can realize precoding calculation or predictive precoding on the terminal equipment side, and can also implement these functions on the network side equipment (gNB) side. According to different implementation methods, at least two of the above four types of TD basis vectors/DD basis vectors need to be supported. Therefore, when using the Rel-18 enhanced Type II codebook to calculate precoding, the TD/DD basis vectors need to be indicated. type.
  • codebook switching can also be performed flexibly by indicating the type of TD basis vector/DD basis vector, without gNB then reconfigures the corresponding codebook parameter information.
  • embodiments of the present disclosure provide a basis vector type indication method and device to indicate the type of TD basis vector/DD basis vector, which can not only reduce the configuration overhead of network side equipment or the feedback overhead of terminal equipment, but also achieve Flexible switching between various Type II codebooks.
  • FIG. 2 is a flow chart of a basis vector type indication method provided by an embodiment of the present disclosure.
  • the method is executed by the terminal device.
  • the method may include but is not limited to the following steps:
  • S21 Receive the first type indication sent by the network side device.
  • the terminal device receives a first type indication sent by the network side device, and the first type indication is used to indicate the type of the time domain TD basis vector and/or the Doppler domain DD basis vector.
  • the first type indication may be that the terminal device receives the first type indication sent by the network side device, and may receive high-level signaling sent by the network-side device, wherein the high-level signaling carries the first type indication.
  • high-level signaling such as: RRC (radio resource control, radio resource control), MAC-CE (media access control control element, media access control layer control element) and DCI (downlink control information, downlink control information) one or more.
  • the network side device sends high-level signaling to the terminal device, and indicates the type of the TD basis vector and/or the DD basis vector through the high-level signaling.
  • the network side device can also indicate the TD basis vector and/or the type of the TD basis vector by sending indication information to the terminal device.
  • the embodiment of the present disclosure does not specifically limit the type of DD basis vector.
  • the network side device may send a first type indication to the terminal device to indicate the type of TD base vector; or it may also send a first type indication to the terminal device to indicate the type of DD base vector; or it may also be A first type indication is sent to the terminal device, simultaneously indicating the types of the TD basis vector and the DD basis vector.
  • the types of TD basis vectors and/or DD basis vectors include For indicating the type of TD basis vector and/or DD basis vector, the length of the indication information used to indicate the type of TD basis vector and/or DD basis vector in the high-layer signaling is X bits, and X is a positive integer.
  • high-level signaling includes at least one of the following:
  • Downlink control information DCI Downlink control information DCI.
  • the types of TD basis vectors and/or DD basis vectors include , to indicate the type of TD basis vectors and/or DD basis vectors.
  • the network side device displays and indicates the types of TD basis vectors and DD basis vectors through RRC signaling, using indication information with a length of Identity matrix. For example, when the value of this 2 bit is "01", it means that the type of TD basis vector and DD basis vector is DFT basis vector, and when it is "10", it means that the type of TD basis vector and DD basis vector is unit matrix.
  • receiving the type indication sent by the network side device includes: receiving first codebook parameter information sent by the network side device, where the first codebook parameter information is used to indicate the TD basis vector and/or the DD basis vector. type.
  • the terminal device receives the first type of indication sent by the network side device.
  • the first type of indication is first codebook parameter information, where the first codebook parameter information is used to indicate the TD basis vector and/or the DD basis.
  • the type of vector is first codebook parameter information, where the first codebook parameter information is used to indicate the TD basis vector and/or the DD basis.
  • the first codebook parameter information is used to indicate the type of TD basis vector, or the first codebook parameter information is used to indicate the type of DD basis vector, or the first codebook parameter information is used to indicate the TD basis vector and DD basis vector.
  • the type of basis vector is used to indicate the type of basis vector.
  • the first codebook parameter information includes at least one of the following:
  • the terminal device receives the first codebook parameter information sent by the network side device.
  • the first codebook parameter information is the number of TD basis vectors selected by the configured terminal device.
  • the TD basis vector selected by the configured terminal device The number of is used to indicate the type of TD basis vector.
  • the terminal device receives the first codebook parameter information sent by the network side device.
  • the first codebook parameter information is the number of DD basis vectors selected by the configured terminal device.
  • the DD basis vector selected by the configured terminal device The number of is used to indicate the type of DD basis vector.
  • the terminal device receives the first codebook parameter information sent by the network side device.
  • the first codebook parameter information is the configured oversampling factor of the TD basis vector, and the configured oversampling factor of the TD basis vector is used to indicate The type of TD basis vector.
  • the terminal device receives the first codebook parameter information sent by the network side device.
  • the first codebook parameter information is the configured oversampling factor of the DD basis vector, and the configured oversampling factor of the DD basis vector is used to indicate The type of DD basis vector.
  • the terminal device receives the first codebook parameter information sent by the network side device.
  • the first codebook parameter information is the configured rotation factor associated with the TD basis vector.
  • the configured rotation factor associated with the TD basis vector Factor is used to indicate the type of TD basis vector.
  • the terminal device receives the first codebook parameter information sent by the network side device.
  • the first codebook parameter information is the configured rotation factor associated with the DD basis vector.
  • the configured rotation factor associated with the DD basis vector The factor is used to indicate the type of DD basis vector.
  • the terminal device receives the first codebook parameter information sent by the network side device.
  • the first codebook parameter information is the number of configured first combination coefficient matrices.
  • the number of configured first combination coefficient matrices is expressed in Indicates the type of TD basis vectors and/or DD basis vectors.
  • each first combination coefficient matrix is determined by the number of spatial domain SD (Spatial Domain, spatial domain) basis vectors and FD (Frequency Domain, frequency domain) basis vectors, or each first combination coefficient matrix
  • the dimension is determined by the number of Channel Status Information Reference Signal (CSI-RS) ports selected by the terminal device and the number of FD basis vectors configured by the network side device.
  • CSI-RS Channel Status Information Reference Signal
  • the terminal device receives the first codebook parameter information sent by the network side device.
  • the first codebook parameter information is the logarithm of the configured frequency domain FD basis vector and the TD basis vector.
  • the configured frequency domain FD basis vector and the logarithm of the TD basis vector are used to indicate the type of TD basis vector.
  • the terminal device receives the first codebook parameter information sent by the network side device.
  • the first codebook parameter information is the logarithm of the configured frequency domain FD basis vector and the DD basis vector.
  • the configured frequency domain FD basis vector and the logarithm of the DD basis vector are used to indicate the type of DD basis vector.
  • the type of TD basis vector used for time domain compression includes two types: DFT basis vector and identity matrix.
  • the number of feedback first combination coefficient matrices configured by the network side device (gNB) for the terminal device is Y 1
  • the dimension of each first combination coefficient matrix is 2L ⁇ M, indicating 2L rows and M columns
  • the TD basis vector The type of is the identity matrix
  • the dimension of the identity matrix is Y 1 ⁇ Y 1 .
  • the type of DD basis vector used for time domain compression includes two types: DFT basis vector and identity matrix.
  • the number of feedback first combination coefficient matrices configured by the network side device (gNB) for the terminal device is Y 1
  • the dimension of each first combination coefficient matrix is 2L ⁇ M, indicating 2L rows and M columns
  • the DD basis vector The type of is the identity matrix
  • the dimension of the identity matrix is Y 1 ⁇ Y 1 .
  • TD basis vectors and DD basis vectors used for time domain compression include two types: DFT basis vectors and identity matrices.
  • the number of feedback first combination coefficient matrices configured by the network side device (gNB) for the terminal device is Y 1
  • the dimension of each first combination coefficient matrix is 2L ⁇ M, indicating 2L rows and M columns
  • the TD basis vector The type of the DD basis vector is the identity matrix
  • the dimension of the identity matrix is Y 1 ⁇ Y 1 .
  • the terminal equipment or gNB configures the terminal equipment with Z pairs of FD basis vectors and TD basis vectors or DD basis vectors, then the terminal equipment or gNB adopts a codebook structure. Calculate the PMI at the measurement time or the PMI at a future time. At this time, the TD basis vector and DD basis vector types should be DFT types.
  • S22 According to the first type indication, determine the type of the TD basis vector and/or the DD basis vector to calculate precoding or predictive precoding.
  • the terminal device receives the first type indication sent by the network side device, and can determine the type of the TD basis vector and/or the DD basis vector according to the first type indication.
  • the type of the DD basis vector may be determined.
  • the types of the TD basis vector and the DD basis vector can be determined.
  • the type corresponding to the DD basis vector (W d ) includes the following four options:
  • Alt1 Orthogonal DFT (Discrete Fourier Transform, Discrete Fourier Transform) basis vector (including or not including rotation factors);
  • Alt3 Other waveforms, such as DCT (Discrete Cosine Transform, Discrete Cosine Transform) or Slepian;
  • the type corresponding to the TD basis vector (W t ) includes the following four options:
  • Alt3 Other waveforms, such as DCT (Discrete Cosine Transform, Discrete Cosine Transform) or Slepian;
  • the terminal device supports using different types of TD basis vectors and/or DD basis vectors to calculate precoding or predictive precoding.
  • the terminal device receives the first type indication from the network side device and determines the TD basis vector and/or The type of DD basis vector, so that precoding or predictive precoding can be calculated based on the determined type of TD basis vector and/or DD basis vector.
  • the configuration overhead of network-side devices or the feedback overhead of terminal devices can be reduced, and flexible switching between various Type II codebooks can be achieved.
  • the terminal device predictive precoding can predict precoding at a future time, and the future time can be any time after the type of the TD basis vector and/or the DD basis vector is determined.
  • the terminal device receives the first type indication sent by the network side device, and determines the type of the time domain TD basis vector and/or the Doppler domain DD basis vector according to the first type indication.
  • the terminal device supports the use of different Type of TD basis vectors and/or DD basis vectors, calculated precoding or predictive precoding. As a result, the configuration overhead of network-side devices or the feedback overhead of terminal devices can be reduced, and flexible switching between various Type II codebooks can be achieved.
  • FIG. 3 is a flow chart of a basis vector type indication method provided by an embodiment of the present disclosure.
  • the method is executed by the network side device.
  • the method may include but is not limited to the following steps:
  • S31 Send a second type indication for calculating precoding or predictive precoding to the network side device, where the second type indication is used to indicate the type of the TD basis vector and/or the DD basis vector.
  • the terminal device sends a second type indication to the network side device, where the second type indication is used to indicate the type of the TD basis vector and/or the DD basis vector.
  • the second type indication is used to indicate the type of the TD basis vector and/or the DD basis vector.
  • the terminal device may send a second type indication to the network side device to indicate the type of TD base vector; or, it may also send a second type indication to the network side device to indicate the type of DD base vector; or, further The second type indication may be sent to the network side device to simultaneously indicate the types of the TD basis vector and the DD basis vector.
  • the second type indication includes Y bits
  • the types of TD basis vectors and/or DD basis vectors include Y types
  • Y is a positive integer
  • the second type indication is second codebook parameter information, where the second codebook parameter information includes at least one of the following:
  • the first offset associated with the TD basis vector reported by the terminal device where the value range of the first offset is [0, O 3 -1], and O 3 is the oversampling factor;
  • the second offset associated with the DD basis vector reported by the terminal device where the value range of the second offset is [0, O 3 -1], and O 3 is the oversampling factor;
  • the terminal device sends a second type of indication to the network side device.
  • the second type of indication is second codebook parameter information, where the second codebook parameter information is used to indicate the TD basis vector and/or the DD basis vector. type.
  • the second codebook parameter information is used to indicate the type of TD basis vector, or the second codebook parameter information is used to indicate the type of DD basis vector, or the second codebook parameter information is used to indicate the TD basis vector and DD basis vector.
  • the type of basis vector is used to indicate the type of basis vector.
  • the terminal device sends the second codebook parameter information to the network side device.
  • the second codebook parameter information is the number of the second combination coefficient matrix reported by the terminal device.
  • the number of the second combination coefficient matrix reported by the terminal device is The number is used to indicate the type of TD basis vector and/or DD basis vector.
  • the dimension of each second combination coefficient matrix is determined by the number of SD basis vectors and FD basis vectors, or the dimension of each second combination coefficient matrix is determined by the number of CSI-RS ports and network selected by the terminal device. The number of FD basis vectors configured by the side device is determined.
  • the terminal device sends the second codebook parameter information to the network side device.
  • the second codebook parameter information is the number of TD basis vectors reported by the terminal device.
  • the number of TD basis vectors reported by the terminal device is used for Indicates the type of TD basis vector.
  • the terminal device sends second codebook parameter information to the network side device.
  • the second codebook parameter information is the number of DD basis vectors reported by the terminal device.
  • the number of DD basis vectors reported by the terminal device is used for Indicates the type of DD basis vector.
  • the terminal device sends second codebook parameter information to the network side device.
  • the second codebook parameter information is the first offset associated with the TD basis vector reported by the terminal device, where the first offset
  • the value range of the quantity is [0, O 3 -1], O 3 is the oversampling factor, and the first offset associated with the TD basis vector reported by the terminal device is used to indicate the type of the TD basis vector.
  • the terminal device sends second codebook parameter information to the network side device, and the second codebook parameter information is the second offset associated with the DD basis vector reported by the terminal device, where the second offset
  • the value range of the quantity is [0, O 3 -1], O 3 is the oversampling factor, and the second offset associated with the DD basis vector reported by the terminal device is used to indicate the type of the DD basis vector.
  • the terminal device sends the second codebook parameter information to the network side device.
  • the second codebook parameter information is the rotation factor reported by the terminal device and associated with the TD basis vector.
  • the second codebook parameter information reported by the terminal device is related to the TD basis vector.
  • the associated rotation factor is used to indicate the type of TD basis vector.
  • the terminal device sends the second codebook parameter information to the network side device.
  • the second codebook parameter information is the rotation factor reported by the terminal device and associated with the DD basis vector.
  • the second codebook parameter information reported by the terminal device is related to the DD basis vector.
  • the associated rotation factors are used to indicate the type of DD basis vectors.
  • the terminal device sends the second codebook parameter information to the network side device.
  • the second codebook parameter information is the logarithm of the frequency domain FD basis vector and the TD basis vector reported by the terminal device.
  • the logarithm of the FD basis vector and the TD basis vector is used to indicate the type of TD basis vector.
  • the terminal device sends the second codebook parameter information to the network side device.
  • the second codebook parameter information is the logarithm of the frequency domain FD basis vector and the DD basis vector reported by the terminal device.
  • the logarithm of the FD basis vector and the DD basis vector is used to indicate the type of DD basis vector.
  • the type of TD basis vector used for time domain compression includes two types: DFT basis vector and identity matrix.
  • the terminal device reports the number Y of 2 second combination coefficient matrix matrices, and the dimension of each second combination coefficient matrix is 2L ⁇ M, indicating 2L rows and M columns, then the type of the TD basis vector is the unit matrix, and the unit matrix The dimensions are Y 2 ⁇ Y 2 .
  • the type of TD basis vector is the identity matrix, and the dimension of the identity matrix is 1 ⁇ 1, or Y 2 ⁇ Y 2 , Y 2 represents The number of second combination coefficient matrices reported by the terminal device.
  • the type of DD basis vector used for time domain compression includes two types: DFT basis vector and identity matrix.
  • the terminal device reports the number Y of 2 second combination coefficient matrix matrices, and the dimension of each second combination coefficient matrix is 2L ⁇ M, indicating 2L rows and M columns, then the type of the DD basis vector is the unit matrix, and the unit matrix The dimensions are Y 2 ⁇ Y 2 .
  • the type of DD basis vector is the identity matrix, and the dimension of the identity matrix is 1 ⁇ 1, or Y 2 ⁇ Y 2 , Y 2 represents The number of second combination coefficient matrices reported by the terminal device.
  • TD basis vectors and DD basis vectors used for time domain compression include two types: DFT basis vectors and identity matrices.
  • the terminal device reports the number Y of 2 second combination coefficient matrix matrices, and the dimension of each second combination coefficient matrix is 2L ⁇ M, indicating 2L rows and M columns, then the type of the TD basis vector and the DD basis vector is the unit matrix. , the dimension of the identity matrix is Y 2 ⁇ Y 2 .
  • the type of the TD basis vector and DD basis vector is the unit matrix, and the dimension of the unit matrix is 1 ⁇ 1, or Y 2 ⁇ Y 2 , Y 2 represents the number of second combination coefficient matrices reported by the terminal device.
  • the terminal device sends a second type indication for calculating precoding or predictive precoding to the network side device, where the second type indication is used to indicate the type of TD basis vector and/or DD basis vector. Therefore, the network side device can determine the type of TD basis vector and/or DD basis vector according to the second type indication, and can calculate precoding or predictive precoding according to the determined type of TD basis vector and/or DD basis vector. As a result, the configuration overhead of network-side devices or the feedback overhead of terminal devices can be reduced, and flexible switching between various Type II codebooks can be achieved.
  • FIG. 4 is a flow chart of a basis vector type indication method provided by an embodiment of the present disclosure.
  • the terminal device sends a second type indication, where the second type indication is used to indicate the type of the TD basis vector and/or the DD basis vector.
  • the terminal device may send a second type indication to the network side device to indicate the type of TD base vector; or, it may also send a second type indication to the network side device to indicate the type of DD base vector; or, further The second type indication may be sent to the network side device to simultaneously indicate the types of the TD basis vector and the DD basis vector.
  • the second type indication includes Y bits
  • the types of TD basis vectors and/or DD basis vectors include Y types
  • Y is a positive integer
  • the second type indication is second codebook parameter information, where the second codebook parameter information includes at least one of the following:
  • the first offset associated with the TD basis vector reported by the terminal device where the value range of the first offset is [0, O 3 -1], and O 3 is the oversampling factor;
  • the terminal device sends a second type of indication to the network side device.
  • the second type of indication is second codebook parameter information, where the second codebook parameter information is used to indicate the TD basis vector and/or the DD basis vector. type.
  • the second codebook parameter information is used to indicate the type of TD basis vector, or the second codebook parameter information is used to indicate the type of DD basis vector, or the second codebook parameter information is used to indicate the TD basis vector and DD basis vector.
  • the type of basis vector is used to indicate the type of basis vector.
  • the terminal device sends the second codebook parameter information to the network side device.
  • the second codebook parameter information is the number of the second combination coefficient matrix reported by the terminal device.
  • the number of the second combination coefficient matrix reported by the terminal device is The number is used to indicate the type of TD basis vector and/or DD basis vector.
  • the dimension of each second combination coefficient matrix is determined by the number of SD basis vectors and FD basis vectors, or the dimension of each second combination coefficient matrix is determined by the number of CSI-RS ports and network selected by the terminal device. The number of FD basis vectors configured by the side device is determined.
  • the terminal device sends the second codebook parameter information to the network side device.
  • the second codebook parameter information is the number of TD basis vectors reported by the terminal device.
  • the number of TD basis vectors reported by the terminal device is used for Indicates the type of TD basis vector basis vector.
  • the terminal device sends second codebook parameter information to the network side device.
  • the second codebook parameter information is the number of DD basis vectors reported by the terminal device.
  • the number of DD basis vectors reported by the terminal device is used for Indicates the type of DD basis vector.
  • the terminal device sends second codebook parameter information to the network side device.
  • the second codebook parameter information is the first offset associated with the TD basis vector reported by the terminal device, where the first offset
  • the value range of the quantity is [0, O 3 -1], O 3 is the oversampling factor, and the first offset associated with the TD basis vector reported by the terminal device is used to indicate the type of the TD basis vector.
  • the terminal device sends second codebook parameter information to the network side device, and the second codebook parameter information is the second offset associated with the DD basis vector reported by the terminal device, where the second offset
  • the value range of the quantity is [0, O 3 -1], O 3 is the oversampling factor, and the second offset associated with the DD basis vector reported by the terminal device is used to indicate the type of the DD basis vector.
  • the terminal device sends the second codebook parameter information to the network side device.
  • the second codebook parameter information is the rotation factor reported by the terminal device and associated with the TD basis vector.
  • the second codebook parameter information reported by the terminal device is related to the TD basis vector.
  • the associated rotation factor is used to indicate the type of TD basis vector.
  • the terminal device sends the second codebook parameter information to the network side device.
  • the second codebook parameter information is the rotation factor reported by the terminal device and associated with the DD basis vector.
  • the second codebook parameter information reported by the terminal device is related to the DD basis vector.
  • the associated rotation factors are used to indicate the type of DD basis vectors.
  • the terminal device sends the second codebook parameter information to the network side device.
  • the second codebook parameter information is the logarithm of the frequency domain FD basis vector and the DD basis vector reported by the terminal device.
  • the logarithm of the FD basis vector and the DD basis vector is used to indicate the type of DD basis vector.
  • the type of TD basis vector used for time domain compression includes two types: DFT basis vector and identity matrix.
  • the terminal device reports the number Y of 2 second combination coefficient matrix matrices, and the dimension of each second combination coefficient matrix is 2L ⁇ M, indicating 2L rows and M columns, then the type of the TD basis vector is the unit matrix, and the unit matrix The dimensions are Y 2 ⁇ Y 2 .
  • the type of TD basis vector is the identity matrix, and the dimension of the identity matrix is 1 ⁇ 1, or Y 2 ⁇ Y 2 , Y 2 represents The number of second combination coefficient matrices reported by the terminal device.
  • the type of DD basis vector used for time domain compression includes two types: DFT basis vector and identity matrix.
  • the terminal device reports the number Y of 2 second combination coefficient matrix matrices, and the dimension of each second combination coefficient matrix is 2L ⁇ M, indicating 2L rows and M columns, then the type of the DD basis vector is the unit matrix, and the unit matrix The dimensions are Y 2 ⁇ Y 2 .
  • the terminal device reports the number Y of 2 second combination coefficient matrix matrices, and the dimension of each second combination coefficient matrix is 2L ⁇ M, indicating 2L rows and M columns, then the type of the TD basis vector and the DD basis vector is the unit matrix. , the dimension of the identity matrix is Y 2 ⁇ Y 2 .
  • S42 According to the second type indication, determine the type of the TD basis vector and/or the DD basis vector to calculate precoding or predictive precoding.
  • the type of the TD basis vector may be determined.
  • the type of the DD basis vector may be determined.
  • the types of the TD basis vector and the DD basis vector can be determined.
  • TD basis vectors and/or DD basis vectors For the types of TD basis vectors and/or DD basis vectors, please refer to the relevant descriptions in the above embodiments and will not be described again here.
  • the network side device supports the use of different types of TD basis vectors and/or DD basis vectors to calculate precoding or predictive precoding.
  • the network side device receives the second type indication sent by the terminal device and determines the TD basis vector and /or the type of DD basis vector, so that precoding or predictive precoding can be calculated based on the determined type of TD basis vector and/or DD basis vector.
  • the configuration overhead of network-side devices or the feedback overhead of terminal devices can be reduced, and flexible switching between various Type II codebooks can be achieved.
  • the terminal device receives the first type indication sent by the network side device, and determines the type of TD basis vector and/or DD basis vector according to the first type indication.
  • the terminal device supports the use of different types of TD basis vectors and /or DD basis vector, calculate precoding or predictive precoding. As a result, the configuration overhead of network-side devices or the feedback overhead of terminal devices can be reduced, and flexible switching between various Type II codebooks can be achieved.
  • FIG. 5 is a flow chart of a basis vector type indication method provided by an embodiment of the present disclosure.
  • S51 Send a first type indication for calculating precoding or predictive precoding to the terminal device, where the first type indication is used to indicate the type of the TD basis vector and/or the DD basis vector.
  • the length of the information is X bits, and X is a positive integer.
  • the network side device sends the first type indication to the terminal device, and may send high-level signaling to the terminal device, where the high-level signaling carries the first type indication.
  • high-level signaling includes at least one of the following:
  • Downlink control information DCI Downlink control information DCI.
  • the types of TD basis vectors and/or DD basis vectors include , to indicate the type of TD basis vectors and/or DD basis vectors.
  • the network side device displays and indicates the types of TD basis vectors and DD basis vectors through RRC signaling, using indication information with a length of Identity matrix. For example, when the value of this 2 bit is "01", it means that the type of TD basis vector and DD basis vector is DFT basis vector, and when it is "10", it means that the type of TD basis vector and DD basis vector is unit matrix.
  • sending the first type indication to the terminal device includes: sending first codebook parameter information to the terminal device, where the first codebook parameter information is used to indicate the type of TD basis vector and/or DD basis vector. .
  • the network side device sends the first type indication to the terminal device, and may send the first codebook parameter information to the terminal device.
  • the first type indication is the first codebook parameter information, where the first codebook parameter information Used to indicate the type of TD basis vectors and/or DD basis vectors.
  • the first codebook parameter information is used to indicate the type of TD basis vector, or the first codebook parameter information is used to indicate the type of DD basis vector, or the first codebook parameter information is used to indicate the TD basis vector and DD basis vector.
  • the type of basis vector is used to indicate the type of basis vector.
  • the first codebook parameter information includes at least one of the following:
  • the network side device sends the first codebook parameter information to the terminal device.
  • the first codebook parameter information is the number of TD basis vectors selected by the configured terminal device.
  • the number of TD basis vectors selected by the configured terminal device is The number is used to indicate the type of TD basis vector.
  • the network side device sends the first codebook parameter information to the terminal device.
  • the first codebook parameter information is the number of DD basis vectors selected by the configured terminal device.
  • the number of DD basis vectors selected by the configured terminal device is The number is used to indicate the type of DD basis vector.
  • the network side device sends the first codebook parameter information to the terminal device.
  • the first codebook parameter information is the configured oversampling factor of the TD basis vector.
  • the configured oversampling factor of the TD basis vector is used to indicate the TD.
  • the network side device sends the first codebook parameter information to the terminal device.
  • the first codebook parameter information is the configured oversampling factor of the DD basis vector.
  • the configured oversampling factor of the DD basis vector is used to indicate DD.
  • the network side device sends the first codebook parameter information to the terminal device.
  • the first codebook parameter information is the configured rotation factor associated with the TD basis vector.
  • the configured rotation factor associated with the TD basis vector Used to indicate the type of TD basis vector.
  • the network side device sends the first codebook parameter information to the terminal device.
  • the first codebook parameter information is the configured rotation factor associated with the DD basis vector.
  • the configured rotation factor associated with the DD basis vector Used to indicate the type of DD basis vector.
  • the network side device sends first codebook parameter information to the terminal device.
  • the first codebook parameter information is the number of configured first combination coefficient matrices.
  • the configured number of first combination coefficient matrices is used for Indicates the type of TD basis vectors and/or DD basis vectors.
  • each first combination coefficient matrix is determined by the number of spatial domain SD (Spatial Domain, spatial domain) basis vectors and FD (Frequency Domain, frequency domain) basis vectors, or each first combination coefficient matrix
  • the dimension is determined by the number of Channel Status Information Reference Signal (CSI-RS) ports selected by the terminal device and the number of FD basis vectors configured by the network side device.
  • CSI-RS Channel Status Information Reference Signal
  • the network side device sends the first codebook parameter information to the terminal device.
  • the first codebook parameter information is the logarithm of the configured frequency domain FD basis vector and the TD basis vector.
  • the configured frequency domain FD basis vector and The logarithm of the TD basis vector is used to indicate the type of TD basis vector.
  • the network side device sends the first codebook parameter information to the terminal device.
  • the first codebook parameter information is the logarithm of the configured frequency domain FD basis vector and the DD basis vector.
  • the configured frequency domain FD basis vector and The logarithm of the DD basis vector is used to indicate the type of DD basis vector.
  • TD basis vectors used for time domain compression include two types: DFT basis vectors and identity matrices.
  • the number of feedback first combination coefficient matrices configured by the network side device (gNB) for the terminal device is Y 1
  • the dimension of each first combination coefficient matrix is 2L ⁇ M, indicating 2L rows and M columns
  • the TD basis vector The type of is the identity matrix
  • the dimension of the identity matrix is Y 1 ⁇ Y 1 .
  • the terminal device or gNB configures the terminal device with Z pairs of FD basis vectors and TD basis vectors
  • the terminal device or gNB adopts a codebook structure. Calculate the PMI at the measurement time or the PMI at a future time. At this time, the TD basis vector type should be the DFT type.
  • the type of DD basis vector used for time domain compression includes two types: DFT basis vector and identity matrix.
  • the number of feedback first combination coefficient matrices configured by the network side device (gNB) for the terminal device is Y 1
  • the dimension of each first combination coefficient matrix is 2L ⁇ M, indicating 2L rows and M columns
  • the DD basis vector The type of is the identity matrix
  • the dimension of the identity matrix is Y 1 ⁇ Y 1 .
  • the terminal device or gNB configures the terminal device with Z pairs of FD basis vectors and DD basis vectors
  • the terminal device or gNB adopts a codebook structure. Calculate the PMI at the measurement time or the PMI at a future time. At this time, the DD basis vector type should be the DFT type.
  • TD basis vectors and DD basis vectors used for time domain compression include two types: DFT basis vectors and identity matrices.
  • the number of feedback first combination coefficient matrices configured by the network side device (gNB) for the terminal device is Y 1
  • the dimension of each first combination coefficient matrix is 2L ⁇ M, indicating 2L rows and M columns
  • the TD basis vector The type of the DD basis vector is the identity matrix
  • the dimension of the identity matrix is Y 1 ⁇ Y 1 .
  • the terminal equipment or gNB configures the terminal equipment with Z pairs of FD basis vectors and TD basis vectors or DD basis vectors, then the terminal equipment or gNB adopts a codebook structure. Calculate the PMI at the measurement time or the PMI at a future time. At this time, the TD basis vector and DD basis vector types should be DFT types.
  • the network side device sends a first type indication for calculating precoding or predictive precoding to the terminal device, where the first type indication is used to indicate the type of TD basis vector and/or DD basis vector. Therefore, the terminal device can determine the type of the TD basis vector and/or the DD basis vector according to the first type indication, and can calculate the precoding or predictive precoding according to the determined type of the TD basis vector and/or the DD basis vector. As a result, the configuration overhead of network-side devices or the feedback overhead of terminal devices can be reduced, and flexible switching between various Type II codebooks can be achieved.
  • the methods provided by the embodiments of the present disclosure are introduced from the perspectives of terminal equipment and network side equipment respectively.
  • the network side device and the terminal device may include a hardware structure and a software module to implement the above functions in the form of a hardware structure, a software module, or a hardware structure plus a software module.
  • a certain function among the above functions can be executed by a hardware structure, a software module, or a hardware structure plus a software module.
  • FIG. 6 is a schematic structural diagram of a communication device 1 provided by an embodiment of the present disclosure.
  • the communication device 1 shown in FIG. 6 may include a transceiver module 11 and a processing module 12.
  • the transceiver module 11 may include a sending module and/or a receiving module.
  • the sending module is used to implement the sending function
  • the receiving module is used to implement the receiving function.
  • the transceiving module 11 may implement the sending function and/or the receiving function.
  • the communication device 1 may be a terminal device, a device in the terminal device, or a device that can be used in conjunction with the terminal device.
  • the communication device 1 may be a network-side device, a device in the network-side device, or a device that can be used in conjunction with the network-side device.
  • the communication device 1 is a terminal device and includes: a transceiver module 11 and a processing module 12 .
  • the transceiver module 11 is configured to receive the first type of indication sent by the network side device.
  • the processing module 12 is configured to determine the type of the time domain TD basis vector and/or the Doppler domain DD basis vector according to the first type indication to calculate precoding or predictive precoding.
  • the types of TD basis vectors and/or DD basis vectors include and/or the type of the DD basis vector, where the length of the indication information used in the high-layer signaling to indicate the type of the TD basis vector and/or the DD basis vector is X bits, and X is a positive integer.
  • high-level signaling includes at least one of the following:
  • Downlink control information DCI Downlink control information DCI.
  • the transceiver module 11 is configured to: receive the first codebook parameter information sent by the network side device, where the first codebook parameter information is used to indicate the type of TD basis vector and/or DD basis vector.
  • the first codebook parameter information includes at least one of the following:
  • the dimension of each first combination coefficient matrix is determined by the number of spatial domain SD basis vectors and FD basis vectors, or the dimension of each first combination coefficient matrix is determined by the channel state information reference signal CSI selected by the terminal device. -The number of RS ports is determined by the number of FD basis vectors configured on the network side device.
  • the communication device 1 is a terminal device and includes a transceiver module 11 .
  • the transceiver module 11 is configured to send a second type indication for calculating precoding or predictive precoding to the network side device, where the second type indication is used to indicate the type of the TD basis vector and/or the DD basis vector.
  • the second type indication includes Y bits
  • the types of TD basis vectors and/or DD basis vectors include Y types
  • Y is a positive integer
  • the second type indication is second codebook parameter information, where the second codebook parameter information includes at least one of the following:
  • the first offset associated with the TD basis vector reported by the terminal device where the value range of the first offset is [0, O 3 -1], and O 3 is the oversampling factor;
  • the second offset associated with the DD basis vector reported by the terminal device where the value range of the second offset is [0, O 3 -1], and O 3 is the oversampling factor;
  • the dimension of each second combination coefficient matrix is determined by the number of spatial SD basis vectors and FD basis vectors, or the dimension of each second combination coefficient matrix is selected by the terminal device.
  • the number of CSI-RS ports is determined by the number of FD basis vectors configured by the network side device.
  • the communication device 1 is a network-side device and includes a transceiver module 11 and a processing module 12 .
  • the transceiver module 11 is configured to receive the second type of indication sent by the terminal device;
  • the processing module 12 is configured to determine the type of the TD basis vector and/or the DD basis vector according to the second type indication to calculate precoding or predictive precoding.
  • the second type indication includes Y bits
  • the types of TD basis vectors and/or DD basis vectors include Y types
  • Y is a positive integer
  • the second type indication is second codebook parameter information, where the second codebook parameter information includes at least one of the following:
  • the first offset associated with the TD basis vector reported by the terminal device where the value range of the first offset is [0, O 3 -1], and O 3 is the oversampling factor;
  • the second offset associated with the DD basis vector reported by the terminal device where the value range of the second offset is [0, O 3 -1], and O 3 is the oversampling factor;
  • the dimension of each second combination coefficient matrix is determined by the number of SD basis vectors and FD basis vectors, or the dimension of each second combination coefficient matrix is determined by the number of CSI-RS ports and network selected by the terminal device. The number of FD basis vectors configured by the side device is determined.
  • the communication device 1 is a network-side device and includes a transceiver module 11 .
  • the transceiver module 11 is configured to send a first type indication for calculating precoding or predictive precoding to the terminal device, where the first type indication is used to indicate the type of the TD basis vector and/or the DD basis vector.
  • the types of basis vectors include , the length of the indication information used to indicate the type of TD basis vector and/or DD basis vector in high-level signaling is X bits, and X is a positive integer.
  • high-level signaling includes at least one of the following:
  • Downlink control information DCI Downlink control information DCI.
  • the transceiver module 11 is configured to send first codebook parameter information to the terminal device, where the first codebook parameter information is used to indicate the type of TD basis vector and/or DD basis vector.
  • the first codebook parameter information includes at least one of the following:
  • the dimension of each first combination coefficient matrix is determined by the number of SD basis vectors and FD basis vectors, or the dimension of each first combination coefficient matrix is determined by the channel state information reference signal CSI- selected by the terminal device.
  • the number of RS ports is determined by the number of FD basis vectors configured on the network side device.
  • the communication device 1 provided in the above embodiments of the present disclosure achieves the same or similar beneficial effects as the communication methods provided in some of the above embodiments, and will not be described again here.
  • FIG. 7 is a schematic structural diagram of another communication device 1000 provided by an embodiment of the present disclosure.
  • the communication device 1000 may be a network-side device, a terminal device, a chip, a chip system, a processor, etc. that supports a network-side device to implement the above method, or a chip or a chip system that supports a terminal device to implement the above method. , or processor, etc.
  • the communication device 1000 can be used to implement the method described in the above method embodiment. For details, please refer to the description in the above method embodiment.
  • the communication device 1000 may be a network-side device, a terminal device, a chip, a chip system, a processor, etc. that supports a network-side device to implement the above method, or a chip or a chip system that supports a terminal device to implement the above method. , or processor, etc.
  • the device can be used to implement the method described in the above method embodiment. For details, please refer to the description in the above method embodiment.
  • Communication device 1000 may include one or more processors 1001.
  • the processor 1001 may be a general-purpose processor or a special-purpose processor, or the like.
  • it can be a baseband processor or a central processing unit.
  • the baseband processor can be used to process communication protocols and communication data.
  • the central processor can be used to control communication devices (such as base stations, baseband chips, terminal equipment, terminal equipment chips, DU or CU, etc.) and execute computer programs. , processing data for computer programs.
  • the communication device 1000 may also include one or more memories 1002, on which a computer program 1004 may be stored.
  • the memory 1002 executes the computer program 1004, so that the communication device 1000 performs the method described in the above method embodiment.
  • the memory 1002 may also store data.
  • the communication device 1000 and the memory 1002 can be provided separately or integrated together.
  • the communication device 1000 may also include a transceiver 1005 and an antenna 1006.
  • the transceiver 1005 may be called a transceiver unit, a transceiver, a transceiver circuit, etc., and is used to implement transceiver functions.
  • the transceiver 1005 may include a receiver and a transmitter.
  • the receiver may be called a receiver or a receiving circuit, etc., used to implement the receiving function;
  • the transmitter may be called a transmitter, a transmitting circuit, etc., used to implement the transmitting function.
  • the communication device 1000 may also include one or more interface circuits 1007.
  • the interface circuit 1007 is used to receive code instructions and transmit them to the processor 1001 .
  • the processor 1001 executes the code instructions to cause the communication device 1000 to perform the method described in the above method embodiment.
  • the communication device 1000 is a terminal device: the transceiver 1005 is used to execute S21 in Figure 2; the S31 in Figure 3; and the processor 1001 is used to execute S22 in Figure 2.
  • the communication device 1000 is a network-side device: the transceiver 1005 is used to execute S41 in FIG. 4; S51 in FIG. 5; and the processor 1001 is used to execute S42 in FIG. 4.
  • the processor 1001 may include a transceiver for implementing receiving and transmitting functions.
  • the transceiver may be a transceiver circuit, an interface, or an interface circuit.
  • the transceiver circuits, interfaces or interface circuits used to implement the receiving and transmitting functions can be separate or integrated together.
  • the above-mentioned transceiver circuit, interface or interface circuit can be used for reading and writing codes/data, or the above-mentioned transceiver circuit, interface or interface circuit can be used for signal transmission or transfer.
  • the processor 1001 may store a computer program 1003, and the computer program 1003 runs on the processor 1001, causing the communication device 1000 to perform the method described in the above method embodiment.
  • the computer program 1003 may be solidified in the processor 1001, in which case the processor 1001 may be implemented by hardware.
  • the communication device 1000 may include a circuit, and the circuit may implement the functions of sending or receiving or communicating in the foregoing method embodiments.
  • the processors and transceivers described in this disclosure may be implemented on integrated circuits (ICs), analog ICs, radio frequency integrated circuits (RFICs), mixed signal ICs, application specific integrated circuits (ASICs), printed circuit boards ( printed circuit board (PCB), electronic equipment, etc.
  • the processor and transceiver can also be manufactured using various IC process technologies, such as complementary metal oxide semiconductor (CMOS), n-type metal oxide-semiconductor (NMOS), P-type Metal oxide semiconductor (positive channel metal oxide semiconductor, PMOS), bipolar junction transistor (BJT), bipolar CMOS (BiCMOS), silicon germanium (SiGe), gallium arsenide (GaAs), etc.
  • CMOS complementary metal oxide semiconductor
  • NMOS n-type metal oxide-semiconductor
  • PMOS P-type Metal oxide semiconductor
  • BJT bipolar junction transistor
  • BiCMOS bipolar CMOS
  • SiGe silicon germanium
  • GaAs gallium arsenide
  • the communication device described in the above embodiments may be a terminal device, but the scope of the communication device described in the present disclosure is not limited thereto, and the structure of the communication device may not be limited by FIG. 7 .
  • the communication device may be a stand-alone device or may be part of a larger device.
  • the communication device may be:
  • the IC collection may also include storage components for storing data and computer programs;
  • FIG. 8 is a structural diagram of a chip provided in an embodiment of the present disclosure.
  • Chip 1100 includes processor 1101 and interface 1103.
  • the number of processors 1101 may be one or more, and the number of interfaces 1103 may be multiple.
  • Interface 1103, used to receive code instructions and transmit them to the processor.
  • the processor 1101 is configured to run code instructions to perform the indication method of the base vector type as described in some of the above embodiments.
  • Interface 1103, used to receive code instructions and transmit them to the processor.
  • the processor 1101 is configured to run code instructions to perform the indication method of the base vector type as described in some of the above embodiments.
  • the chip 1100 also includes a memory 1102, which is used to store necessary computer programs and data.
  • Embodiments of the present disclosure also provide a communication system that includes a communication device as a terminal device in the aforementioned embodiment of FIG. 6 and a communication device as a network-side device, or the system includes a communication device as a terminal device in the aforementioned embodiment of FIG. 7 A communication device and a communication device as a network side device.
  • the present disclosure also provides a readable storage medium on which instructions are stored, and when the instructions are executed by a computer, the functions of any of the above method embodiments are implemented.
  • the present disclosure also provides a computer program product, which, when executed by a computer, implements the functions of any of the above method embodiments.
  • the above embodiments it may be implemented in whole or in part by software, hardware, firmware, or any combination thereof.
  • software it may be implemented in whole or in part in the form of a computer program product.
  • the computer program product includes one or more computer programs.
  • the computer program When the computer program is loaded and executed on a computer, the processes or functions described in accordance with the embodiments of the present disclosure are generated in whole or in part.
  • the computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device.
  • the computer program may be stored in or transferred from one computer-readable storage medium to another, for example, the computer program may be transferred from a website, computer, server, or data center Transmission to another website, computer, server or data center through wired (such as coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (such as infrared, wireless, microwave, etc.) means.
  • the computer-readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server, data center, etc. that contains one or more available media integrated therein.
  • the available media may be magnetic media (e.g., floppy disks, hard disks, magnetic tapes), optical media (e.g., high-density digital video discs (DVD)), or semiconductor media (e.g., solid state disks, SSD)) etc.
  • magnetic media e.g., floppy disks, hard disks, magnetic tapes
  • optical media e.g., high-density digital video discs (DVD)
  • DVD digital video discs
  • semiconductor media e.g., solid state disks, SSD
  • At least one in the present disclosure can also be described as one or more, and the plurality can be two, three, four or more, and the present disclosure is not limited.
  • the technical feature is distinguished by “first”, “second”, “third”, “A”, “B”, “C” and “D” etc.
  • the technical features described in “first”, “second”, “third”, “A”, “B”, “C” and “D” are in no particular order or order.
  • each table in this disclosure can be configured or predefined.
  • the values of the information in each table are only examples and can be configured as other values, which is not limited by this disclosure.
  • it is not necessarily required to configure all the correspondences shown in each table.
  • the corresponding relationships shown in some rows may not be configured.
  • appropriate deformation adjustments can be made based on the above table, such as splitting, merging, etc.
  • the names of the parameters shown in the titles of the above tables may also be other names understandable by the communication device, and the values or expressions of the parameters may also be other values or expressions understandable by the communication device.
  • other data structures can also be used, such as arrays, queues, containers, stacks, linear lists, pointers, linked lists, trees, graphs, structures, classes, heaps, hash tables or hash tables. wait.
  • Predefinition in this disclosure may be understood as definition, pre-definition, storage, pre-storage, pre-negotiation, pre-configuration, solidification, or pre-burning.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

Des modes de réalisation de la présente divulgation divulguent un procédé et un appareil d'indication de type de vecteur de base. Le procédé comprend les étapes suivantes : un dispositif terminal reçoit une première indication de type envoyée par un dispositif côté réseau, et détermine, selon la première indication de type, des types d'un vecteur de base TD et/ou d'un vecteur de base DD de façon à calculer un précodage ou à prédire le précodage. Par conséquent, un surdébit de configurations du dispositif côté réseau ou un surdébit de rétroinformations du dispositif terminal peut être réduit, et une commutation flexible entre divers registres de code de type II peut être réalisée.
PCT/CN2022/101331 2022-06-24 2022-06-24 Procédé et appareil d'indication de type de vecteur de base WO2023245683A1 (fr)

Priority Applications (2)

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PCT/CN2022/101331 WO2023245683A1 (fr) 2022-06-24 2022-06-24 Procédé et appareil d'indication de type de vecteur de base
CN202280002091.5A CN118575424A (zh) 2022-06-24 2022-06-24 基向量类型的指示方法和装置

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PCT/CN2022/101331 WO2023245683A1 (fr) 2022-06-24 2022-06-24 Procédé et appareil d'indication de type de vecteur de base

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110086732A (zh) * 2018-01-25 2019-08-02 华为技术有限公司 一种信道估计方法和装置
WO2021209206A1 (fr) * 2020-04-15 2021-10-21 Telefonaktiebolaget Lm Ericsson (Publ) Rétroaction améliorée d'informations d'état de canal (csi) de type ii en nouvelle radio (nr) à l'aide d'une réciprocité d'angle et de retard

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110086732A (zh) * 2018-01-25 2019-08-02 华为技术有限公司 一种信道估计方法和装置
WO2021209206A1 (fr) * 2020-04-15 2021-10-21 Telefonaktiebolaget Lm Ericsson (Publ) Rétroaction améliorée d'informations d'état de canal (csi) de type ii en nouvelle radio (nr) à l'aide d'une réciprocité d'angle et de retard

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